# Docker plugin discovery does not work **URL:** \ **Category:** Support\ **Created:** [April 10, 2020, 9:24am UTC](https://forums.mobyproject.org/t/docker-plugin-discovery-does-not-work/575 "2020-04-10T09:24:21Z")\ **Posts on this page:** 6\ **Page:** 1
**Author:** ![tola](https://avatars.discourse-cdn.com/v4/letter/t/4da419/32.png) [@tola](https://forums.mobyproject.org/u/tola)\ **Post date:** [April 10, 2020, 9:24am UTC](https://forums.mobyproject.org/t/docker-plugin-discovery-does-not-work/575/1 "2020-04-10T09:24:21Z")
Hey, on my Ubuntu 18.04 I installed Moby using apt. I know how to create an own docker plugin using the go-helper and I can ‘docker plugin install’ a self-made log plugin with its own rootfs. Intention of all this is to forward the stdout of all containers to an already existing log-system, that is non-standard. Due to several reasons, I need to make the plugin an external plugin. Such, that it is started externally and discovered by Docker by one of the three methods described here: > **[| Docker Documentation](https://docs.docker.com/engine/extend/plugin_api/)** > > Docker Plugin API Docker plugins are out-of-process extensions which add capabilities to the Docker Engine. This document describes the Docker Engine plugin API. To view information on plugins managed by... (I am aware, that they do not state log-plugins there explicitly) I created a plugin using the ServeUnix function call, which after starting creates a .sock in /run/docker/plugins I also created a plugin using the ServeTCP function call, which creates a .spec file containing the target IP address in /var/lib/docker/ When starting a container using this command docker run --log-driver=logdrivertcp hello-world it says docker: Error response from daemon: logger: no log driver named ‘logdrivertcp’ is registered. **Should this be working with Moby?** dev@dev-VirtualBox:/src/co/moby$ docker version Client: Version: 3.0.10+azure API version: 1.40 Go version: go1.12.14 Git commit: 99c5edceb48d64c1aa5d09b8c9c499d431d98bb9 Built: Tue Nov 5 00:55:15 2019 OS/Arch: linux/amd64 Experimental: false Server: Engine: Version: 3.0.10+azure API version: 1.40 (minimum version 1.12) Go version: go1.12.14 Git commit: ea84732a77 Built: Fri Jan 24 20:08:11 2020 OS/Arch: linux/amd64 Experimental: false containerd: Version: v1.2.11 GitCommit: f772c10a585ced6be8f86e8c58c2b998412dd963 runc: Version: 1.0.0-rc10 GitCommit: dc9208a3303feef5b3839f4323d9beb36df0a9dd docker-init: Version: 0.18.0 GitCommit: fec3683 dev@dev-VirtualBox:/src/co/moby$ uname -a Linux dev-VirtualBox 5.3.0-40-generic #32~18.04.1-Ubuntu SMP Mon Feb 3 14:05:59 UTC 2020 x86\_64 x86\_64 x86\_64 GNU/Linux ---
**Author:** ![cpuguy83](https://yyz1.discourse-cdn.com/flex031/user_avatar/forums.mobyproject.org/cpuguy83/32/22_2.png) [@cpuguy83](https://forums.mobyproject.org/u/cpuguy83)\ **Post date:** [April 10, 2020, 1:10pm UTC](https://forums.mobyproject.org/t/docker-plugin-discovery-does-not-work/575/2 "2020-04-10T13:10:00Z")
Log drivers plugins are a joy supporter for managed plugins, not external ones. ---
**Author:** ![tola](https://avatars.discourse-cdn.com/v4/letter/t/4da419/32.png) [@tola](https://forums.mobyproject.org/u/tola)\ **Post date:** [April 11, 2020, 4:56pm UTC](https://forums.mobyproject.org/t/docker-plugin-discovery-does-not-work/575/3 "2020-04-11T16:56:52Z")
Hey. Okay sad, but thanks. Are there any means to export a managed plugin and import it somewhere else? Preferably but just copying a folder? ---
**Author:** ![cpuguy83](https://yyz1.discourse-cdn.com/flex031/user_avatar/forums.mobyproject.org/cpuguy83/32/22_2.png) [@cpuguy83](https://forums.mobyproject.org/u/cpuguy83)\ **Post date:** [April 11, 2020, 5:01pm UTC](https://forums.mobyproject.org/t/docker-plugin-discovery-does-not-work/575/4 "2020-04-11T17:01:30Z")
Wow autocorrect really messed me up on the last message… Managed plugins are special container images. You can create one from a tarball, and push/pull to/from a registry. ---
**Author:** ![tola](https://avatars.discourse-cdn.com/v4/letter/t/4da419/32.png) [@tola](https://forums.mobyproject.org/u/tola)\ **Post date:** [April 11, 2020, 6:13pm UTC](https://forums.mobyproject.org/t/docker-plugin-discovery-does-not-work/575/5 "2020-04-11T18:13:49Z")
I got it anyhow 🙂 Yes I know but unfortunately our repo does not support plugins, it seems. I should create it such as I would tag a container, like repo.name/pluginname:tag and push it, right? This does not work in our private repo. How can I tar one and restore it? With docker save it did not work for me, as there is no “normal” image. Apart from that, can I just copy a folder to the other device? ---
**Author:** ![tola](https://avatars.discourse-cdn.com/v4/letter/t/4da419/32.png) [@tola](https://forums.mobyproject.org/u/tola)\ **Post date:** [May 10, 2020, 9:15am UTC](https://forums.mobyproject.org/t/docker-plugin-discovery-does-not-work/575/6 "2020-05-10T09:15:19Z")
@cpuguy83 do you have any idea?